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WINSTONCH [101]
4 years ago
8

Find the slope of (-2,1),(2,-2)

Mathematics
2 answers:
nirvana33 [79]4 years ago
8 0

Answer:

\boxed {m = -\frac{3}{4}}

Step-by-step explanation:

Use the <u>Slope Formula</u> to help you determine the slope of the two following points:

m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

(where (x_{1}, y_{1}) is the first point and (x_{2}, y_{2}) is the second point)

-Apply both points to the formula:

(x_{1}, y_{1}) = (-2, 1)

(x_{2}, y_{2}) = (2, -2)

m = \frac{-2 - 1}{2 + 2}

-Solve:

m = \frac{-2 - 1}{2 + 2}

m = \frac{-3}{4}

\boxed {m = -\frac{3}{4}}

Therefore, the slope is -\frac{3}{4}.

Volgvan4 years ago
3 0

Answer:

-3/4 is the slope.

Step-by-step explanation:

Use this formula to find slope.

y2-y1/x2-x1

PLUG IN

-2 -1/2- (-2) = -3/4

The slope is -3/4

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Answer:

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3 years ago
A truck is bought at the price of $60,000. The value decreases at the rate of .25 every year (t). The exponential expression 60,
navik [9.2K]

Answer:

$33750

Step-by-step explanation:

Replace t with 2.  The correct formula is

60000(.75)^t   (t is an exponent)

With t = 2, the value of the truck is

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4 0
3 years ago
Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o
uranmaximum [27]

Let

x--------> the time in hours

y-------> the distance in miles

we know that

The speed is equal to

Speed=\frac{distance}{time}

in this problem

Speed=\frac{y}{x}

y=(Speed)*x

<u>Equation First Train</u>

y1=70x

<u>Equation Second Train</u>

y2=80x

y1+y2=600\ miles ---------> equation 1

Substitute the values of y1 and y2 in the equation 1

70x+80x=600

Solve for x

150x=600

x=4\ hours

therefore

<u>the answer is</u>

4\ hours

4 0
3 years ago
Read 2 more answers
3. Bacteria can multiply at an alarming rate when each
Dominik [7]

Answer:

hmmm.

Step-by-step explanation:

times it by 12,000

like 12,000 being half a day

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4 0
3 years ago
ashur solves the following system of linear euations. -3a + 7b = -16. -9a + 5 b = 16 which statement is true about the solution
tiny-mole [99]

Answer:

a=-4, b=-4. (-4, -4).

Step-by-step explanation:

-3a+7b=-16

-9a+5b=16

-------------------

-3(-3a+7b)=-3(-16)

-9a+5b=16

---------------------------

9a-21b=48

-9a+5b=16

------------------

-16b=64

b=64/-16

b=-4

-3a+7(-4)=-16

-3a-28=-16

-3a=-16+28

-3a=12

a=12/-3

a=-4

6 0
3 years ago
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